the influence of welding on the hardness and
Bonfring International Journal of Industrial Engineering and Management Science, Vol. 4, No. 2, May 2014 96 Influence of Welding Processes on Tensile Properties, Microstructure, and Hardness of Friction Stir Welded AZ31B Magnesium Alloy S. Ugender, Dr.A. Kumar and Dr.A. Somi Reddy Abstract--- Friction Stir Welding (FSW) was performed on the material within the processed zone undergoes
The influence of welding alacrity ranging from 5 to 30 mm/s on 2-mm butt joint quality of friction stir welded AZ31B-H24 magnesium alloy was investigated by examining welding defects, microstructures, hardness and tensile properties. Some conclusions can be drawn as follows:1) The grains in the stir zone and the thermo-mechanically Effect of vibration on weld metal hardness and toughness Dec 04, 2013 · With vibration, it is not only residual stresses that are affected. Using two different welding processes, the influence of vibration on hardness and toughness of the weld was measured. For each welding process, two series of Charpy specimens were made over the temperature range from -60 to +20°C. The only difference between the two series was in performing welding with or without
Dec 31, 1993 · Highlights: The influence of cold wire addition to the tandem submerged arc welding process on the ICRCGHAZ is investigated. Comprehensive characterization of the microstructure and micro-hardness in the ICRCGHAZ of a HSLA steel is performed. Hardness-test, the first and easiest, necessary testVickers Hardness-test. Here the indenter is a square based diamond pyramid with opposite faces forming an angle of 136 degrees.Accepted loads are 5, 10, 30, 50 kg but smaller an larger loads can be used when necessary.. The diagonals of the impression have to be precisely measured with a microscope, and the Vickers hardness result is looked up in tables. . The Hardness-test must report
The hardness profile of the welded joint cross section corresponds to a typical W Eramah, A. M, et al.:Influence of Friction Stir Welding Parameters on Properties of THERMAL SCIENCE:Year 2014, Vol. 18, Suppl. 1, pp.S21-S28 INFLUENCE OF HEAT INPUT ON MICROSTRUCTURE AND tensile strength. Chennaiaha et.al  examined influence of Heat Input on mild steel and carbon steel (EN 8) joints prepared by using MIG welding process and it was found as heat input decreases, there is an increase in the tensile strength, impact strength and also hardness.
INFLUENCE OF NANO-FLUX POWDER ON THE HARDNESS AND TENSILE STRENGTH OF STEEL WELDED JOINTS Sunday A. Afolalu 1, Samson O. Ongbali , Moses E. Emetere 2 and Omolayo M. Ikumapayi 3 welding include Gas Tungsten Arc Welding, Shielded Metal Arc Welding, Flux Core Arc Welding, Submerged Influence of Welding Parameters on Weld Formation and
- AbstractIntroductionMaterials and MethodExperimental Results and DiscussionsTHE INFLUENCE OF THE RECONDITIONING BY WELDING O. CHIVU et al.:THE INFLUENCE OF THE RECONDITIONING BY WELDING PROCESSES ON THE HARDNESS METALURGIJA 55 (2016) 2, 281-284 short repair time but also the convenient quality of the deposited layer. The present paper suggests a technique and technology that can be applied to repair the crank-shafts in the crankpin journals area. It is the
Apr 21, 2015 · The results show that a longer post-weld heat treatment time corresponds to larger precipitates and a smaller amount of Cr 23 C 6 at the grain boundaries, which can decrease the overall hardness. The post-weld heat treatment analysis indicates that an increase in the amount of results in better mechanical properties for particles with octagonal shapes and a small size. Microstructure and Residual Stress Distributions Under the Mar 01, 2016 · It is also observed that hardness in the middle section of the welding zone is less than that of the base metal. The hardness profile displayed W-shape, which is characteristic for friction stir welds of precipitation hardening aluminum alloys.[ 42 , 43 ] The metallography results show that grain structure of the welding zone is affected by heat and plastic deformation and its hardness is lower
(1) The influence of current on hardness The height of the surfacing welding surface is 3mm. When the current changes between 100A, 150A and 200A, the hardness decreases with the increase of the current; when the height of the surfacing welding surface is 6mm, the hardness shows an overall downward trend as the current increases. The Influence of Weld Microstructure on Mechanical Sep 16, 2008 · The Influence of Weld Microstructure on Mechanical Properties of Alclad AA2024-T3 Friction Spot Welded 2008-01-2287. Friction Spot Welding FSpW, also known, as Refill Friction Spot Welding is a new solid-state spot process developed by GKSS, exhibiting as one of the main advantages, no key-hole on the surface of the material after the
1 The influence of position in overlap joints of Mg and Al alloys on microstructure and hardness of laser welds. S. BANNOURa,b *, K. ABDERRAZAKa, S. MATTEIc, J.E. MASSEd, M. AUTRICb, H. MHIRIa. a Unité de Thermique et Thermodynamique des Procédés Industriels, Ecole Nationale dIngénieurs de Monastir, Avenue Ibn Jazzar, 5019 Vol. 3, Issue 8, August 2014 Influence of Friction Stir influence of these parameters on the mechanical performance of the weld has been investigated in terms of hardness and tensile testing. KEYWORDS:Aluminium alloys, Friction stir welding, Hardness, Tensile strength I. INTRODUCTION Aluminium alloys find wide applications in aerospace, automobile industries, railway vehicles, bridges, offshore
biggest SWC hardness occurs in measurement line from the root of weld, where the highest weld cooling speed was observed. A modification of the conditions of welding sequence in order to decrease the cooling speed of this run makes it possible to reduce HVmax in the joints. In case of butt weld joints, cracks appeared at bending to the angle of 70°.